編譯腳本

lame 版本

下載完成后 編譯 生成

include

lib

兩個文件夾

直接拷貝到 lib 目錄下

集成

然后

CMakeList 里面添加頭文件路徑 不做這一步 后面無法在 C++文件里面include

include(libs/include/lame/lame.h)

更簡單的 可以直接添加目錄

include_directories(libs/include)

添加靜態庫鏈接 這一步忘記了會導致編譯報錯

add_library(mp3lame STATIC IMPORTED)

set_target_properties(mp3lame

PROPERTIES IMPORTED_LOCATION

${distribution_DIR}/armeabi-v7a/libmp3lame.a)

target_link_libraries( # Specifies the target library.

native-lib

mp3lame

# Links the target library to the log library

# included in the NDK.

${log-lib})

完整的 CMake

# For more information about using CMake with Android Studio, read the

# documentation: https://d.android.com/studio/projects/add-native-code.html

# Sets the minimum version of CMake required to build the native library.

cmake_minimum_required(VERSION 3.4.1)

set(distribution_DIR ../../../../libs)

include_directories(libs/include)

# Creates and names a library, sets it as either STATIC

# or SHARED, and provides the relative paths to its source code.

# You can define multiple libraries, and CMake builds them for you.

# Gradle automatically packages shared libraries with your APK.

add_library( # Sets the name of the library.

native-lib

# Sets the library as a shared library.

SHARED

# Provides a relative path to your source file(s).

src/main/cpp/native-lib.cpp)

# Searches for a specified prebuilt library and stores the path as a

# variable. Because CMake includes system libraries in the search path by

# default, you only need to specify the name of the public NDK library

# you want to add. CMake verifies that the library exists before

# completing its build.

find_library( # Sets the name of the path variable.

log-lib

# Specifies the name of the NDK library that

# you want CMake to locate.

log)

# Specifies libraries CMake should link to your target library. You

# can link multiple libraries, such as libraries you define in this

# build script, prebuilt third-party libraries, or system libraries.

target_link_libraries( # Specifies the target library.

native-lib

mp3lame

# Links the target library to the log library

# included in the NDK.

${log-lib})

add_library(mp3lame STATIC IMPORTED)

set_target_properties(mp3lame

PROPERTIES IMPORTED_LOCATION

${distribution_DIR}/armeabi-v7a/libmp3lame.a)

CMake編譯

needed by錯誤

一定是路徑設置不對

.a文件呢或者.so文件設置不對

總結出，NDK 中引入別的庫

下載庫 交叉編譯庫 .a .so 不一定要編譯，也可以源碼代入

導入 AndroidStudio，編寫 CMake,導入頭文件

編譯相關源代碼

build 出相應的 so

參考

總結

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